/*
Copyright © 2023 Alibaba Group Holding Ltd.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package framework

import (
	"context"
	"encoding/json"
	"fmt"
	"testing"

	v1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/types"
)

func (f *Framework) CreateNamespace(ctx context.Context, t *testing.T, testCtx *TestCtx) string {
	name := testCtx.ID()
	_, err := f.KubeClient.CoreV1().Namespaces().Create(ctx, &v1.Namespace{
		ObjectMeta: metav1.ObjectMeta{
			Name: name,
		},
	}, metav1.CreateOptions{})

	if err != nil {
		t.Fatal(fmt.Errorf("failed to create namespace with name %v: %w", name, err))
	}

	namespaceFinalizerFn := func() error {
		return f.DeleteNamespace(ctx, name)
	}

	testCtx.AddFinalizerFn(namespaceFinalizerFn)

	return name
}

func (f *Framework) DeleteNamespace(ctx context.Context, name string) error {
	return f.KubeClient.CoreV1().Namespaces().Delete(ctx, name, metav1.DeleteOptions{})
}

func (f *Framework) AddLabelsToNamespace(ctx context.Context, name string, additionalLabels map[string]string) error {
	ns, err := f.KubeClient.CoreV1().Namespaces().Get(ctx, name, metav1.GetOptions{})
	if err != nil {
		return err
	}

	if ns.Labels == nil {
		ns.Labels = map[string]string{}
	}

	for k, v := range additionalLabels {
		ns.Labels[k] = v
	}

	_, err = f.KubeClient.CoreV1().Namespaces().Update(ctx, ns, metav1.UpdateOptions{})
	if err != nil {
		return err
	}

	return nil
}

func (f *Framework) RemoveLabelsFromNamespace(ctx context.Context, name string, labels ...string) error {
	ns, err := f.KubeClient.CoreV1().Namespaces().Get(ctx, name, metav1.GetOptions{})
	if err != nil {
		return err
	}

	if len(ns.Labels) == 0 {
		return nil
	}

	type patch struct {
		Op   string `json:"op"`
		Path string `json:"path"`
	}

	var patches []patch
	for _, l := range labels {
		patches = append(patches, patch{Op: "remove", Path: "/metadata/labels/" + l})
	}
	b, err := json.Marshal(patches)
	if err != nil {
		return err
	}

	_, err = f.KubeClient.CoreV1().Namespaces().Patch(ctx, name, types.JSONPatchType, b, metav1.PatchOptions{})
	if err != nil {
		return err
	}

	return nil
}
